Pros and Cons of VAT Registration

The current VAT registration threshold is £90,000, but approaching it can mean very different things for different businesses. For some, registration changes little beyond the paperwork. For others, it means taking a careful look at prices and profit margins.

Over the years, I’ve had plenty of conversations with owners worried that registering will make them too expensive. It’s an understandable concern, but the impact depends largely on who your customers are.

For most UK businesses, VAT registration becomes compulsory when your taxable turnover goes over £90,000 in a rolling 12-month period.

That means checking your sales at the end of each month and looking back over the previous 12 months. It isn’t based on your accounting year or the tax year, and the clock doesn’t reset each April.

Taxable turnover includes sales subject to VAT at the standard, reduced or zero rate. Exempt sales are generally excluded.

If you exceed the threshold under this test, you must apply within 30 days of the end of that month. Registration normally takes effect from the first day of the second month afterwards.

There is also a separate rule if you expect taxable sales to exceed £90,000 in the next 30 days alone, perhaps because of a large contract. In that case, registration takes effect from the date you first expect this to happen.

You can also choose to register below the threshold. Whether voluntary registration makes sense depends on your customers, your costs and your plans for the business.

If you run a consultancy or agency, and most of your customers are VAT registered businesses that can recover the VAT you charge.

If your fee is £1,000, you would normally start invoicing £1,000 plus £200 VAT, assuming your service attracts the standard 20% rate. Your customer pays £1,200 but claims back the £200 VAT. Your fee remains £1,000, and their eventual cost remains £1,000.

There can be some cash flow implications, but commercially, very little may change.

You can also generally recover VAT on eligible business purchases, subject to the usual rules. That can make voluntary registration worthwhile even before you reach the threshold.

The main downside is the extra administration: keeping the right digital records, submitting VAT returns, usually quarterly, and setting aside the VAT due to HMRC. The VAT passing through your bank account needs to be kept separate in your mind from the money available to spend.

One qualification matters here: being VAT registered doesn’t mean a customer can always recover all the VAT charged. It’s their ability to recover it that makes the difference.

The impact of VAT registration is much bigger for businesses providing services mainly to domestic households such as a plumber.  

Your customers cannot claim the VAT back. If a job previously cost £1,000 and the plumber adds 20% VAT, the household now has to find £1,200.

Alternatively, the plumber could keep the total price at £1,000 and absorb the VAT. But that leaves just £833.33 as sales income, with £166.67 payable as VAT before allowing for VAT recovered on costs.

The customer pays the same, but the business earns less from the job.

Recovering VAT on materials, tools and other eligible expenses can soften the impact. It won’t necessarily make up for the reduction in income, particularly where much of the charge is for the owner’s labour.

For this type of business, registration deserves some planning well before it becomes compulsory.

My usual advice to a consumer-facing business approaching the threshold is to review prices early.

For example, that might mean increasing prices by 10% at least six months before registration is likely. Once registered, a further 10% increase may be manageable. If that feels too much in one go, the second stage could be spread out, perhaps 5% at registration and another 5% six months later.

This isn’t an exact formula. Successive percentage increases compound, and the right approach depends on your margins, costs and customers. It also doesn’t change the date you must register.

The purpose is to give the business time to adjust, rather than facing one sudden decision between a large price rise and a sharp fall in profit.

Owners often worry that higher prices will mean losing work. In the businesses I’ve advised, I haven’t generally seen that happen.

That doesn’t mean every customer will accept every increase. But it is worth testing the assumption that the price you charge today is the most anyone will pay.

Some owners deliberately keep their turnover below the VAT threshold. They turn work away or limit how much they do because they don’t want to register.

That can be a perfectly reasonable lifestyle choice. But it becomes a problem when the owner wants to earn more and feels unable to grow.

Their turnover stays restricted while materials, insurance and household bills continue to rise. Being busy doesn’t necessarily translate into being financially comfortable.

By comparison, businesses that plan their pricing and move through registration often go on to grow further. Once past the threshold, they no longer face the same self-imposed limit on sales.

One case from many years ago has stayed with me.

A young plumber was good at his job and very busy. As his turnover approached the VAT threshold, we discussed registration and his options.

When we later prepared his accounts, he had crossed the threshold, which was £80,000 at the time. We advised him that he needed to register.

He was worried that adding VAT would cost him customers, but he didn’t want to absorb it within his existing prices either. So he kept putting registration off.

Another year passed. His annual turnover was now over £100,000, and HMRC contacted him.

He had to provide bank statements and sales invoices so HMRC could establish when registration should have taken effect. They then calculated the VAT due for the periods since that date. There were also interest charges.

In his case, HMRC did not impose an additional penalty. Unfortunately, the liability was still more than he could afford. He closed the business and returned to employment.

It was a sad outcome for someone who had the skills and demand to build a successful business.

The important point is that delaying registration does not delay the liability. If you register late, VAT is still due on relevant sales from the date registration should have taken effect, even if you never charged customers separately for it. Penalties may also apply.

VAT registration can bring extra administration, pricing decisions and pressure on cash flow. It can also allow you to recover VAT on eligible costs and grow without continually watching a turnover ceiling.

For a business selling to customers who can recover VAT, the commercial impact may be modest. For one selling to households, the effect on prices and margins needs more thought.

In my experience, giving yourself time to plan makes that transition much easier.

The useful question is whether staying below the threshold supports the business you want, or has quietly become the thing holding it back.

If your business is approaching the VAT threshold, or you’re wondering whether voluntary registration would make sense, book a discovery call. We can talk through your customers, pricing and plans for the business, and help you understand what registration could mean for you.